[R] How do I reverse the digits of a number

Ben Bolker bolker at ufl.edu
Sun Oct 11 03:42:52 CEST 2009




tom_p wrote:
> 
> Hi All,
> 
> Thanks for your help.  I need to reverse the digits of a number (unknown
> lenght).  Example 1234->4321
> 
> Tom
> 

> z <- 4321

> as.numeric(paste(rev(strsplit(as.character(z),"")[[1]]),collapse=""))
[1] 1234

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